James mahony



(No Model.)

J. MAHONY. FEED WATER HEATER AND GLAEIEIER.

No. 308,180. Patented Nov. 18, 1884....

I INVENTOR WITNESSES:

N. PETERS. Plwwum m nm. WashmglmL D.C

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UNITE STATES ATnN'r @rrrcn.

J AMES MAHONY, OF NEW YORK, N. Y.

FEED-WATER HEATER AND CLARI FIER.

SPECIFICATION forming part of Letters Patent No. 308,180, dated November 18, 1884.

Application filed April '23, 1884. (No model.)'

To all 2072 0712 it may concern:

Be-it known that I, J AMES MAnoNY, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Feed- VVatcr Heaters and Glarifiers, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to apparatus for heat ing, filtering, and clarifying the feed-water of a boiler; and the main object is to overcome certain difficulties which are only met within the shell of the'boiler, and which can only be overcome while the water is hot or while under boiler pressures and temperatures.

The object of my improvements is to so treat the feed-water while being admitted within the boiler, and while it passes to the waterspace, that it shall be raised to the proper temperature, filtered, and clarified before reaching such regular water space, as well as to draw or blow off such matter as may be left from such heating, filtration, or clarify- To accomplish this object I admit, after the usual method, through any portion of the boiler-shell or contiguous part thereof, the feed-water to the steam-space by means of an inlet-pipe having a number of small outlets, through which the water is dropped or forced to a pan or receiver below, where all the foreign or injurious matter is extracted from the water before it is allowed to overflow into the regular or usual water-space of the boiler. At the bottom of this pan or receiver an outlet is provided, through which the foreign or injurious matter may be withdrawn or blown off.

In the accompanying drawings, Figure 1 represents a section of a boiler supplied with one of my improved feed-water heating and clarifying apparatus. Figs. 2 and 3 represent cross and longitudinal sectional elevations of a clarifier-pan forming a part of my improved feed-water heating and filtering apparatus,and which is arranged to contain the filtering or clarifying medium whereby the feed-water is clarified or purified, any of the well-known or proper substances being used for this purpose and arranged in any desirable way within the vesselas, for instance, at e in all the figures. Figs. 4 and 5 embody a second method of construction of the clarifier-pan.

At D in Figs. 2 and 3 is represented a special guard-guide for use where necessary, or where the feed-water is extra foul or dirty, which guard-guide receives the water on its first entrance and passes it directly to the bottom of the clarifier-pan, and provides hinderance to all foreign'matter or substances contained in the feed-water from reaching the overflow direct.

In Fig. 3 a second method of admission, as referred to hereinafter, is shown by dotted line at E. 1

Similar letters of reference designate like parts in all the figures. p

In the operation of this feed-water heating and clarifying apparatus the feed-water is admitted to thesteam-space at a, either by means of a pipe, as represented in dotted lines at E, Fig. 3, running and carrying the water through the water-space of the boiler, or directly through the boiler-shell, as more especially shown in all the figures. This admission-pipe may be located at any portion of the steam-space of the boiler, but preferably at a distance from the outlet of steam from the boiler. The feedwater is admitted through a pipe of any shape or form suitable to the boiler, and having perforations or foramina, as represented at b in all the figures, to admit the water in a divided state, that it may not cause too great a commotion in the clarifier-pan B. The feed-water is forced through these perforations or foramina band drops into the clarifier-pan B below, where the water becomes heated to the temperature of the boiler, and all foreign, injurious, or deleterious matter settles or is precipitated and at will drawn or blown off through the outlets c and blow-off cock or valve 0. lVithin the clarifier-pan,which may be constructed of any form or shape to suit the boiler or drum into which it is to be placed, the feed-water is subjected to a chemical action by the suspension or placing therein of chips, shavings, grains, or slabs of such metalzinc, for instance-as may have close affinity for the impurities, acids, or such ingredients as would be injurious to the metal oftheboiler, and as may be contained in the feed-water and not precipitated .by gravity. the suspending orplacing of these chips, shavings, grains, or slabs within the clarifier-pan, the pan itself, or a portion of it, may be con- Instead of resented in Fig. 3 at d, and these perforated plates may be made of zinc or other metal having the affinity and capacity already referred to.

In addition to the several provisions already stated, and where the water is very dirty, for clarifying and cleansing the same, I locate at the overflow portions of the olarifier-pan, and distant from and out of reach of the suction of the blow-off, a pocket or chamber, 6, within which I place any of the well-known or proper substances now used for filtering purposes, so that if any foreign matter be not already precipitated the filtering material will take it up;

or these pockets or chambers may have placed within them chips, shavings, or grains of zinc or other like metal, for not only the clarifying purposes already specified, but for filtering purposes as well. In Fig. 3 I represent a method of locating this filtering material. I locate an open partition, f, of screening, wiregauze, or perforated material inclosing all of the space, 0, contained within the clarifier-pan under the perforated or foraminated exit through which the feed-water overflows from the pan. Through this partition f of foraminated materialthe water passes to fill the pocket or chamber (2, formed by said partition, passing first through the filtering material and then through the foraminated exit or overflow (rep resented here by the plates d) in its passage to the water-space of boiler. Again, this partition may be imperforate, as represented in Fig. 5, and may be of any oonstructionsufliciently strong to contain the filtering or afiinity metal and allowthe feed-water to overflow the partition f and pass through the filtering or affinity material located within the inclosed pockets or chambers e, and thence through the foraminated or perforated exit (2. In Fig. 4 the sides, or a portion of them, are represented at an angle to the vertical, with the intention of confining the feed-water, as far as possible, within the clarifier-pan inclosure, so

that no feed-water or water in the clarifierpan may splash, rock, overflow, or pass into the water-space of the boiler, except by the route laid out or provided for it. These sides, however, may be kept vertical; but for marine, locomotive, or portable boilers my preference is given to the pitched sides. The method and means for suspending or locating the clarifier-pan or any part thereof, as well as the admission of the feed-water to the boiler, will of course depend considerably upon the construction and on the amount of space for The bottom of the pan team in the boiler. 6{:nay project below water-level, provided, of

course,that the top or overflow portionis never otherwise than within the steam-space or above the probable water-level. The depth of the clarifier-pan is only governed by the amount of clearance between the internal metal tubes or crown-sheets of the boiler and the top metal of the steam-space.

The clarifier-pan may, if necessary, in consequence of lack of space or room, be located within a contiguous part of the boiler, or Within a special steam space or drum provided for the purpose, and it may be of any shape compatible with the boiler or the space within which it is located.

It is of course obvious that the feed-water may be piped to enter at the bottom of the boiler, or at any of the usual entrances, and carried up through any portion of the waterspace until it reaches the location a, or any preferable locality suitable to the design of the boiler or a contiguous part thereof. It is obvious, also, that the clarifier-pan maybe used without the filtering chambers, screens, or partitions,where still water, gravity, and precipitation may be relied upon to sufiiciently cleanse the water of dirt or such impurities as will settle to the bottom of the clarifier-pan, and thence be blown 01f without the boiler. It is also obvious that the pipes or openings provided in this apparatus may be furnished with cocks or valves for opening and shutting ofi' communication, after the usual and well- It is also obvious that the known methods. clarifier-pan need not necessarily be constructed of metal, but may be made of any composition or substance not injured by heat or steampressure.

What I claim as new, and desire to secure by Letters Patent, is

1. A clarifier-pan located within a boiler, into which the feed-water for the boiler is introduced, and wherein it is carried directly and immediately to the lowest portion of the same, and subjected to such hinderance'and injurious, or deleterious matter or substance before it is permitted to overflow or be emptied into the usual water-space of the boiler.

2. A clarifier-pan located within a boiler, provided with portions or compartments constructed of such material or substance as may aid in the filtration or have an aflinity for such matter, acids, or attributes as may be contained inthe feed-water of a boiler.

3. A clarifier-pan constructed of any ordinary metal, substance, or composition having suspended, placed, located, or confined within its compass chips, shavings, grains, slabs, or plates of zinc or like material possessing an affinity for any of the inj urions matter, acids,

or attributes that may be contained in the feedtained in the feed-water of a boiler, said sub stance being placed in a filtering-chamber,

forming part thereof, through which all the feed-water has of necessity to pass before over flowing into the water-space of a boiler.

5. A clarifier-pan located within a boiler, having a special receiver or guard into and through which the feed-water has to pass, whereby the feed-water is fed to the bottom of the clarifier-pan, and thence passes upward to the overflow or filtering chamber.

6. A clarifier-pan located withina boiler wherein the feed-water is, by means of a special guide, carried directly to the bottom of the clarifier-pan, and forced to travel in an upward direction and overflow a separate compartment within the compass of said clarifier-pan into an outer compartment, wherein any foreign matter or substance that may have been carried over is allowed to settle in comparatively still water, and whence the clarified water overflows into the waterspace of the boiler.

7. In combination witha clarifier-pan, substantially as specified, a feed-pipe entering at any portion of the boiler, and being carried by a straight or circuitous route to the location of the clarifier-pan, whereby the feedwater is heated before being dropped into the clarifier-pa-n.

8. In combination with aboiler, afeed-pipe entering any portion of the boiler, a clarifierpan constructed and arranged substantially as specified, an outlet pipe or nozzle, and ablowoff valve or cook, whereby the feed-water for a boiler is introduced, heated, clarified, and delivered to the water-space of a boiler, and the dirt, foreign matter, or injurious ingredients extracted from the feed-water blown out from the boiler.

' JAMES MAHONY. Witnesses:

ALFRED K. WOLFE, WM. H. WEIGHTMAN. 

